To split: Select ‘Stick’ and set the horizontal and vertical values for ‘Split screen’ to 5 and 5. For each image to be 1024 you need at least 5000X5000 pixels.Set the zoom high enough to approximate that dimension.Choose type of map and export at best quality.

Open the individual images in an image editor and re-size them to multiples of 2.

To aid in the mapping process, download the map image below and use it as your first map. You will need to make adjustments if your grid is comprised of areas with unequal sides…which is almost always the case.

In my previous example, the figures were approximations. The X/Y lengths of the squares were not exactly the same. You can see the results of what happens in the example on the LEFT when the material scale is left at 1,1 and the offsets 0.5, -0.5 where lengths are unequal. The color lines along the edge indicate the map is out of position.

I had to set Scale X =1, Scale Y=1.007, Offset X=0.4920 and Offset Y = -0.5005 to properly fit the maps as seen on the RIGHT.The values were based on the ‘per meter coverage’ I used. I’m not sure how many place values are read after the decimal point when entering per meter coverage. I use the exact distance of the shortest side to start with… there is only room for one side.

NOTE: You do not have to adjust for each map material if all your maps are the same proportion. Just do it one time and apply the figures to all the other maps. If your grid is evenly spaced as it should be when the addgrid script is applied, every image will be properly mapped.

Napalm, I entered your coordinates in SAS and see that at a zoom factor of 18 the map size is approximately 4500X4500 pixels@19 it will be twice as large which would amount to 25 individual images close to 2048X2048.You can resize the images placed near the perimeter to 1024 and use 2048’s where you feel necessary

I didn't see your post ehrlec, thanks for the info but first I want to have clear how to extract the images in the SASplanet knowing the latitude/longitude. I don't have so many time, but I will try.

Also any way to have in cache all needed files before exporting? What I do is see the zone in the proper zoom and move arround all terrain. But 16*16km2 it is a lot of terrrain! Have any automatic funtion to do this?

Are you having trouble exporting images from sas? I posted how to in this and the Sasplanet thread. Post your coordinates and I’ll create a file for you. Are those long/lats in the mapeo.txt you posted the right ones?

I’ll see if there is a way to do some kind of auto scan. I haven’t been keeping up the program for a while….

Here are some examples of maps I applied using a 3x3 grid with 2048’s. The area is 22km*22km. The face count of the model is around 36K. I’m trying to recreate the Mount Washington auto road in New Hampshire USA.

Thank you SISCO, and by the way I really admire your work and the effort you place in the fine details and texturing, fantástico!

I just started using Zaxxon’s method and it is brilliant in every capacity. And now with the addition of being able to edit the track profile there is little I can’t do anymore. I’m truly thankful for its use!

Some finally considerations if you intend to include satellite map images. Ideally you want your maps to fit the area based on multiples of 2 for game use.At a zoom factor of 16 a 256 pixels tile image equals approximately 875 meters. Therefore, a cross section of 1750 meters would equate to an image size close to 1024 pixels. With each increase in the zoom the distance is cut in half per 256 pixels.

So, when you choose a grid or area, calculate the distance and determine how many map tiles would be required to fit a cross section equaling a map size accepted for game use; 256, 512,1024, etc.

Say your cross section area is 5km. At zoom 17 you would generate an image 3350X3350. You either have to resize to 2048 which is a loss in quality, or increase the map to 4096 which gains nothing and hinders performance.

I am unfamiliar with the method for attaining lat/long's from terrestrial coordinates depicted by the script because I input gridfload data rather than setting a grid. Therefore, I do not require scripts to translate.

Georefernced borders within images "should" not be off position by more than a margin of +/- 1 meter when inputting whole numbers.Imprecise lat/long coordinates on the other hand would widely vary in distance.

Perhaps there might be an issue estimating the correct perimeter corner points of the grid?

I am still unclear on how to find the precise lat/long coordinates for any particular points seen in the anchors_carretera.geo

This is actually rather useful to go either way. I was able to create a point from a GE place mark.

Example guide for locating longitude and latitude lines of your grid

Open anchors_carretera.geo with gmsh or a text editor and record the top left and bottom right X/Y point coordinates.

Note: Y and Z values read in gmsh from the anchors_carretera.geo file are interchanged between BTB coordinates.

Enter your top left point values to find North Lat and West Long.

Código:

format long (required for more decimal places. Not necessary to include for the following command)cd f:\project (base folder of your project, where mapeo.txt is found) [mapeo]=textread('mapeo.txt','%f');x=-2355.35; (Enter your X coordinate)z=2350.53; (Enter your Y coordinate when point is read from gmsh)[longtitud altura latitud]=BTB_a_coor(x,0,z,mapeo)

I want to cut hole out of a mesh using GE coordinates to create separate surface mesh for a water basin. Using your code to create a handful of points is satisfactory. Is there a way to string many GE coordinates together on say one line?

Also, it appears in the codes that longitude and latitude are flipped. Not and issue really…just wondering

ehrlec escribió:I want to cut hole out of a mesh using GE coordinates to create separate surface mesh for a water basin. Using your code to create a handful of points is satisfactory. Is there a way to string many GE coordinates together on say one line?

Also, it appears in the codes that longitude and latitude are flipped. Not and issue really…just wondering